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Username Post: 2005 Tahoe Service 4wd
Posts 1
11-23-19 07:45 AM - Post#2780826    

I have a 2005 chevy tahoe Z71. Runs great with 230xxx miles. When I attempt to engage 4wd high, I can hear what sounds like an electric motor, wiring, but then my indicator light on my 4wd switch starts blinking and I get a service 4wd message on my cluster.
When I attempt to engage 4wd low, the vehicle actually gears down, but does not lock the front tires. Still, my 4wd indicator light blinks and I get a service 4wd message.

I get no messages or prompts untill I attempt to engage 4wd.
I am also unable to pull any codes from the computer.

Any and all help would be appreciated, thanks

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